CN217132542U - Ground detection test device of screw drilling tool - Google Patents

Abstract

The utility model discloses a ground detection test device of a screw drill, which comprises a test workbench, wherein bench clamps are respectively arranged at the two ends above the test workbench, the two ends of the screw drill are clamped in the bench clamps, the two ends at the bottom of the test workbench are respectively supported on a trapezoidal bracket, a bracket hole is arranged at the bottom of the trapezoidal bracket, a water storage pipe is inserted in the bracket holes of the two trapezoidal brackets, and the tail end of the water storage pipe is connected with the head end of the screw drill through a high-pressure rubber pipe; the outlet of the air pump is connected with the air supply main pipe through an air source valve, a plurality of air storage valves are connected along the length direction of the air supply main pipe, and the outlets of the air storage valves are respectively connected with the high-pressure air cylinders; the outlet of the gas supply main pipe is connected with the head end of the water storage pipe through a high-pressure quick-opening valve, and the side wall of the water storage pipe is connected with a safety valve, a pressure gauge and a pressure relief valve. The ground detection test device of the screw drilling tool can greatly improve the efficiency of ground tests, has low investment cost, reduces the labor intensity of operators, and has no pollutant emission in the process of drilling tests.

Description

Ground detection test device of screw drilling tool

Technical Field

The utility model relates to an oil field well workover tool especially relates to a ground detection test device of screw rod drilling tool, belongs to oil field well workover test tool technical field.

Background

The screw drilling tool is composed of an upper joint, a bypass valve assembly, a rotor, a stator, a coupling assembly, a water passing joint, a bearing assembly, a driving shaft, a lower joint and the like, and is a positive displacement downhole power drilling tool which takes drilling fluid as power and converts liquid pressure energy into mechanical energy. The screw rod drilling tool is screwed on the lower end of the pipe column to reach a working well section, when the mud pressure at the well head is low, liquid flows out from the bypass hole, and the screw rod drilling tool is in a waiting state. When the mud pressure rises to a set value, a valve core of the bypass valve moves downwards, a bypass hole is closed, liquid flows into a motor formed by rotors and stators at all stages, a certain pressure difference is formed at the inlet and the outlet of the motor, the rotors are pushed to rotate around the axis of the stators, and the rotating speed and the torque are transmitted to a drill bit below through a universal shaft and a transmission shaft, so that the drilling operation is realized. According to the working requirement, the lower end of the screw drilling tool can be connected with tools such as a tricone bit, a flat-bottom mill shoe, a concave-bottom mill shoe, a pear-shaped mill shoe or a scraper bit in a screwing mode.

With the increasing maturity of oil field well repairing technology and the increasing number of measure wells such as sidetracking, major repair, milling and drilling cement plug, the wide use of screw drilling tools is the first choice tool for such well repairing projects. Taking Jiangsu oil field as an example, the screw drilling tool is used for 240 times every year. Due to the large construction requirement and frequent use, the maintenance and detection of the drilling tool become an important part of daily work. In order to know the performance of the downhole drilling tool, debugging and detection are necessary on the ground before a construction unit receives the performance, which not only influences the construction progress, but also can even cause downhole accidents if an unqualified screw drilling tool goes into the well.

Conventionally, there are three methods for providing power for trial drilling on the ground of a screw drill: diesel engine + plunger pump, 110KW or more motor + multi-stage pump, cement pump truck. The former two debugging methods consume oil and electricity, the purchase cost of the power equipment is as high as about 35 ten thousand, and the investment cost is high.

The third kind of cement pump truck, although the common equipment for well site, has the following disadvantages: 1. the cement pump truck is expensive, and the use cost of the cement pump truck is about 2000 yuan per hour;

2. many processes of the well site use cement pump trucks, need patience waiting, and need to coordinate each process with each other and handle related procedures.

3. The workload of on-site pipeline connection is also large, time and labor are wasted, the waiting time is long, the working efficiency is low, and the debugging cost is high.

4. Impurities such as sewage, acid liquor, crude oil and the like are often remained in a self-contained water tank of the cement pump truck, and after drilling test, the liquid is discharged, so that the factory pollution is caused, and the problems of sand blocking or corrosion of a screw drilling tool and the like are easily caused.

5. The upper end of the screw drill, namely the conical female thread at the head end, is connected with a sealing plug in a rotating manner, the periphery of the conical male thread of the sealing plug is wound with a sealing raw material belt, and 3-4 people rotate the sealing plug through a pipe wrench by manpower. If the threaded connection is leaked in the test process, pressure is inaccurate, the plug needs to be detached, the sealing raw material belt needs to be wound again, the pipe wrench is used for 3-4 persons to re-thread, and the drilling test is time-consuming and labor-consuming, and the conical female thread of the screw drilling tool is easily damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a ground detection test device of screw rod drilling tool, can improve ground test's efficiency greatly, investment cost is low, reduces operative employee's intensity of labour, and tries to bore the discharge of process non-pollutant.

In order to solve the technical problems, the ground detection test device of the screw drill of the utility model comprises a test workbench, bench clamps are respectively arranged at the two ends above the test workbench, the two ends of the screw drill are clamped in the bench clamps, the two ends at the bottom of the test workbench are respectively supported on a trapezoidal bracket, bracket holes are arranged at the bottom of the trapezoidal bracket, water storage pipes are inserted in the bracket holes of the two trapezoidal brackets, and the tail ends of the water storage pipes are connected with the head end of the screw drill through high-pressure rubber pipes; the outlet of the air pump is connected with the air supply main pipe through an air source valve, a plurality of air storage valves are connected along the length direction of the air supply main pipe, and the outlets of the air storage valves are respectively connected with the high-pressure air cylinders; the outlet of the gas supply main pipe is connected with the head end of the water storage pipe through a high-pressure quick-opening valve, and the side wall of the water storage pipe is connected with a safety valve, a pressure gauge and a pressure relief valve.

As the improvement of the utility model, the retaining pipe is equipped with two, pegs graft respectively in two stake holes of trapezoidal support lower part, the head end lateral wall at retaining pipe one is connected to the high pressure quick-opening valve, and the return bend is established ties each other through the terminal of retaining pipe one and the head end of retaining pipe two, the end of retaining pipe two passes through the high-pressure rubber pipe links to each other with the head end of screw rod drilling tool.

As a further improvement, the safety valve is connected to the tail side wall of the first water storage pipe, the pressure gauge is connected to the head side wall of the second water storage pipe, and the pressure relief valve is connected to the tail side wall of the second water storage pipe.

As a further improvement of the utility model, an air-vent valve is arranged between the outlet of the air pump and the inlet of the air source valve.

As a further improvement of the utility model, the head end of the first water storage pipe is connected with the low-pressure water inlet pipe through the water injection valve.

As a further improvement, the bypass hole of the screw drill is sleeved with a splash-proof lantern ring.

As a further improvement, the upper middle section of the test workbench is also provided with bench clamps in the middle section of the clamping screw drill.

As a further improvement of the utility model, the tail end of the screw drill is inserted into the collecting box.

As a further improvement of the present invention, a sealing plug is inserted into the head end unthreaded hole section of the screw drill, a central plug boss is arranged on the sealing plug facing the center of the inner end surface of the screw drill, a sealing ring is sleeved on the periphery of the central plug boss to seal with the unthreaded hole inner wall of the screw drill, the flange of the sealing plug is pressed on the head end port of the screw drill, and a liquid inlet is arranged on the circumference of the sealing plug; the center of the outer end face of the sealing plug is pressed with a screw rod, the middle section of the screw rod is screwed in a screw rod nut, the screw rod nut is fixed on a screw rod support, the outer end of the screw rod is connected with a hand wheel, and the lower end of a fixing support is fixed on the test workbench.

As a further improvement, the periphery of end cap center boss is inlayed sealed end cap O type circle with the inner wall of sealing ring realizes sealedly, inlayed sealing ring O type circle in the periphery recess of sealing ring with the unthreaded hole inner wall of screw rod drilling tool realizes sealedly.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: 1. the device provides high-pressure gas through a high-pressure gas cylinder group, clear water in a water storage pipe is instantly pushed, the clear water enters the screw drilling tool through a connecting manifold, when the water pressure reaches 3-4MPa, whether a bypass valve reliably closes a bypass hole is firstly verified, after the bypass hole is closed, the clear water descends along a central hole of the drilling tool, whether a motor drives a drill bit or a grinding shoe below the motor to smoothly rotate is verified, and the purpose of testing drilling on the ground is achieved.

2. The pneumatic liquid is used as power, and good effect is obtained after the test. The purchase of a diesel engine and a plunger pump is avoided, or the purchase of a power combination of a motor with more than 110KW and a multi-stage pump is avoided, the high platform cost of hiring a cement pump truck is saved, the long and uncertain time for waiting for the leisure time of the cement pump truck is saved, and the troubles for handling related procedures and settlement are also saved. The workshop can detect the repaired drilling tool at any time, so that the repairing quality is ensured, and the qualification rate of the repaired drilling tool is improved. The screw drill tool can be used by an operating team to achieve detection at any time, along with the operation and the collar, and the operation efficiency is improved.

3. The problem of hiring impurity such as residual sewage, acidizing fluid, crude oil that the cement pump truck brought is avoided, the overall process uses the clear water, and can used repeatedly, avoids environmental pollution, can not cause the sand card or the corruption scheduling problem of screw rod drilling tool.

4. The screw connection on the conical female thread at the upper end of the screw drilling tool is changed into the insertion connection on the unthreaded hole section, so that the installation of the sealing plug can be completed by one person, the labor intensity is greatly reduced, the time is saved, the one-time success rate is high, and the high-pressure test is particularly convenient; the sealing ring can be replaced to match with tools of different specifications, so that the cost for processing sealing plugs of various specifications is reduced; the possibility of damage to the female thread of the screw drilling tool is eliminated, and damage to the screw thread connected with the sealing plug can be eliminated.

5. The device's launching has improved construction team's work ageing, has alleviateed team staff's intensity of labour, has greatly improved work efficiency, has practiced thrift the detection cost, has promoted the restoration quality of screw drilling tool, has solved safe environmental protection problem. The use of the device is an ideal tool for replacing the traditional screw drill test.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

FIG. 1 is a flow chart of the ground detection test device of the screw drill of the present invention;

FIG. 2 is a perspective view of a test bench of the present invention;

fig. 3 is a detailed view of a connection mode of the head end of the medium screw drill of the present invention.

In the figure: 1. an air pump; 2. a pressure regulating valve; 3. a gas source valve; 4. a high pressure gas cylinder; 4a, an air storage valve; 5. a high-pressure quick-opening valve; 6a, a first water storage pipe; 6b, a water storage pipe II; 7. a pressure gauge; 8. a safety valve; 9. a pressure relief valve; 10. a high-pressure rubber hose; 11. a low pressure water inlet pipe; 12. a water injection valve; 13. a screw drill; 14. a collection box; 15. sealing the plug; 16. sealing the plug O-shaped ring; 17. a seal ring; 18. a sealing ring is an O-shaped ring; 19. a screw rod; 20. a screw rod bracket; 21. a hand wheel;

22. a test bench; 23. bench vice; 24. a trapezoidal bracket; 25. a splash guard collar.

Detailed Description

In the following description of the present invention, the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, not to mean that the device must have a specific orientation.

As shown in fig. 1 and 2, the ground detection test device of the screw drill of the present invention comprises a test bench 22, bench clamps 23 are respectively disposed at both ends of the top of the test bench 22, and both ends of the screw drill 13 are clamped in the bench clamps 23. Bench clamp 23 may also be provided at the upper middle section of test table 22 to clamp the middle section of screw drill 13 and avoid the outlet of the bypass hole, so that screw drill 13 is more stable.

The two ends of the bottom of the test workbench 22 are respectively supported on the trapezoid supports 24, the bottoms of the trapezoid supports 24 are provided with support holes, water storage pipes are inserted into the support holes of the two trapezoid supports 24, and the tail ends of the water storage pipes are connected with the head ends of the screw drilling tools 13 through the high-pressure rubber pipes 10.

The outlet of the air pump 1 is connected with a gas supply main pipe through a gas source valve 3, a plurality of gas storage valves 4a are connected along the length direction of the gas supply main pipe, and the outlets of the gas storage valves 4a are respectively connected with a high-pressure gas bottle 4; the outlet of the gas supply main pipe is connected with the head end of the water storage pipe through a high-pressure quick-opening valve 5, and the side wall of the water storage pipe is connected with a safety valve 8, a pressure gauge 7 and a pressure relief valve 9.

The two water storage pipes can be arranged to increase the water storage capacity, the first water storage pipe 6a and the second water storage pipe 6b are respectively inserted into the two support holes at the lower part of the trapezoidal support 24, the high-pressure quick-opening valve 5 is connected to the side wall of the head end of the first water storage pipe 6a, the tail end of the first water storage pipe 6a and the head end of the second water storage pipe 6b are connected in series through an elbow, and the tail end of the second water storage pipe 6b is connected with the head end of the screw drilling tool 13 through the high-pressure rubber pipe 10. The water storage pipe can be a 7-inch sleeve, has good pressure resistance, can completely meet the requirements of water storage and pressure bearing, and is connected with the rest by a high-pressure pipeline.

The safety valve 8 is connected to the tail side wall of the first water storage pipe 6a, the pressure gauge 7 is connected to the head side wall of the second water storage pipe 6b, and the pressure relief valve 9 is connected to the tail side wall of the second water storage pipe 6b.

The head end of the first water storage pipe 6a is connected with the low-pressure water inlet pipe 11 through the water injection valve 12, and before each test, the water storage pipe is filled with water through the water injection valve 12 and the low-pressure water inlet pipe 11.

A pressure regulating valve 2 is arranged between the outlet of the air pump 1 and the inlet of the air source valve 3 so as to accurately control the air storage pressure of the high-pressure air bottle 4 according to the test requirement.

In the test interval period, the air source valve 3 and each air storage valve 4a are opened, and the air pump 1 inflates air into each high-pressure air bottle 4 through the pressure regulating valve 2, the air source valve 3 and the air supply main pipe until the set pressure is reached. High-pressure gas is stored in a plurality of groups of high-pressure gas cylinders 4, and the high-pressure gas storage tank is stable in performance, safe and convenient. And simultaneously, the water storage pipe is filled with clear water.

When a certain drilling tool needs to be tested, the screw drilling tool 13 is firstly hung on the test workbench 22 and placed into the lower jaw of each bench clamp 23, and before the screw drilling tool 13 is fixed, the splash-proof lantern ring 25 is sleeved at the position corresponding to the bypass hole, so that the influence of splashing of liquid flow before the bypass hole is closed is reduced. The end of the screw drill 13 is inserted into the collection box 14 to receive the water spray from the water port at the lower end of the drill to avoid spraying on the wall of the workshop. Then each vice 23 is closed to lock the screw drill 13 and then each high-pressure pipeline is connected.

After the connection of high-pressure pipelines at all positions is checked to be reliable, the high-pressure quick-opening valve 5 is opened, compressed air in the high-pressure air bottle 4 enters the water storage pipe through the air supply main pipe and the high-pressure quick-opening valve 5, clean water in the water storage pipe is pushed by high-pressure airflow, is instantly pushed into the screw drilling tool 13 through the high-pressure rubber pipe 10, is sprayed out of the bypass hole and is sprayed into the inner cavity of the splash-proof lantern ring 25; when the water pressure reaches the set pressure of the drilling tool, for example, 3-4MPa, the valve core of the bypass valve moves downwards, the bypass hole is closed, and therefore the closing pressure and the reliability of the bypass hole are firstly verified.

After the bypass hole is closed, clean water descends along the center hole of the drilling tool, whether the motor drives the drill bit or the grinding shoe below to rotate smoothly is verified, and the purpose of trial drilling on the ground is achieved. The clear water sprayed out of the drill water hole enters the collecting box 14 to be collected and recycled.

The advantages of the detection process are simple detection equipment, low detection cost, being especially suitable for ground debugging of the drilling tool, detection after maintenance and being capable of reducing the detection cost of the product to a great extent. The method can reflect the actual performance parameters of the drilling tool to a certain extent, provides credible maintenance reference basis for field maintenance personnel, is convenient to use and reliable in performance, and can greatly improve the maintenance detection level. The method for detecting the screw drilling tool by using the cement pump truck in the past is replaced, and the method is simple and convenient to operate, convenient and fast, safe, reliable, environment-friendly and energy-saving, and can be used for detecting the screw drilling tool along with the lead.

The screw drill is issued by a test team for 200 times per year for calculation, the cost can be saved by about 2000 yuan for each time, the direct cost can be saved by 40 ten thousand yuan per year, and the modification cost is only 3 ten thousand yuan. The screw rod drilling tool has great economic benefit, and when a drilling crew needs to take the screw rod drilling tool, the drilling crew can arrive, try and get the screw rod drilling tool at any time without waiting for a cement pump truck, so that the environmental pollution is avoided, the operating efficiency of the drilling crew is greatly improved, and the indirect economic benefit is greater.

As shown in fig. 3, in order to save the trouble of screwing a screw plug on a conical female thread, the device is characterized in that a sealing plug 15 is inserted in a head end unthreaded hole section of a screw drill, the sealing plug 15 is provided with a plug center boss facing the center of an inner end face of the screw drill, the periphery of the plug center boss is sleeved with a sealing ring 17 to realize sealing with the unthreaded hole inner wall of the screw drill, a flange of the sealing plug 15 is pressed on a head end port of the screw drill, and a liquid inlet is arranged on the circumference of the sealing plug 15; a screw rod 19 is pressed in the center of the outer end face of the sealing plug 15, the middle section of the screw rod 19 is screwed in a screw rod nut, the screw rod nut is fixed on a screw rod support 20, the outer end of the screw rod is connected with a hand wheel 21, and the lower end of a fixing support is fixed on a test workbench 22.

The periphery of the boss at the center of the plug is embedded with a sealing plug O-shaped ring 16 to realize sealing with the inner wall of the sealing ring 17, and the peripheral groove of the sealing ring 17 is embedded with a sealing ring O-shaped ring 18 to realize sealing with the inner wall of the unthreaded hole of the screw drilling tool.

The sealed end cap 15 of pegging graft at the head end of screw rod drilling tool, compress tightly the lead screw 19 through hand wheel 21 can at sealed end cap 15's outer terminal surface, just can accomplish the operation alone, reduce intensity of labour by a wide margin, save time, once the success rate is high, even take place the sealing washer inefficacy, it is also very convenient to change. The sealing ring 17 can be replaced to match with screw drilling tools of different specifications, so that the cost for processing sealing plugs 15 of various specifications is reduced, and the tapered female threads of the screw drilling tools cannot be damaged in the test process.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims (10)

1. The utility model provides a ground detection test device of screw rod drilling tool, includes test bench, its characterized in that: bench clamps are respectively arranged at two ends above the test workbench, two ends of the screw drill are clamped in the bench clamps, two ends of the bottom of the test workbench are respectively supported on the trapezoidal supports, support holes are formed in the bottoms of the trapezoidal supports, water storage pipes are inserted into the support holes of the two trapezoidal supports, and the tail ends of the water storage pipes are connected with the head ends of the screw drill through high-pressure rubber pipes; the outlet of the air pump is connected with the air supply main pipe through an air source valve, a plurality of air storage valves are connected along the length direction of the air supply main pipe, and the outlets of the air storage valves are respectively connected with the high-pressure air cylinders; the outlet of the gas supply main pipe is connected with the head end of the water storage pipe through a high-pressure quick-opening valve, and the side wall of the water storage pipe is connected with a safety valve, a pressure gauge and a pressure relief valve.

2. The ground detection test device of the screw drill according to claim 1, characterized in that: the two water storage pipes are respectively inserted into the two support holes in the lower portion of the trapezoid support, the high-pressure quick-opening valve is connected to the side wall of the head end of the first water storage pipe, the tail end of the first water storage pipe is connected with the head end of the second water storage pipe in series through a bent pipe, and the tail end of the second water storage pipe is connected with the head end of the screw drilling tool through the high-pressure rubber pipe.

3. The ground detection test device of the screw drill according to claim 2, characterized in that: the safety valve is connected to the side wall of the tail portion of the first water storage pipe, the pressure gauge is connected to the side wall of the head end of the second water storage pipe, and the pressure relief valve is connected to the side wall of the tail end of the second water storage pipe.

4. The ground detection test device of the screw drill according to claim 1, wherein: and a pressure regulating valve is arranged between the outlet of the air pump and the inlet of the air source valve.

5. The ground detection test device of the screw drill according to claim 2, characterized in that: and the head end of the first water storage pipe is connected with the low-pressure water inlet pipe through a water injection valve.

6. The ground detection test device of the screw drill according to claim 1, characterized in that: and the bypass hole of the screw drilling tool is sleeved with an anti-splash lantern ring.

7. The ground detection test device of the screw drill according to claim 1, characterized in that: and bench clamp for clamping the middle section of the screw drill is also arranged at the middle section above the test workbench.

8. The ground detection test device of the screw drill according to claim 1, characterized in that: the tail end of the screw drill is inserted into the collecting box.

9. The ground detection test device of the screw drill according to claim 1, characterized in that: a sealing plug is inserted into the head end unthreaded hole section of the screw drill tool, a plug center boss is arranged at the center of the sealing plug, which faces the inner end face of the screw drill tool, a sealing ring is sleeved on the periphery of the plug center boss to realize sealing with the unthreaded hole inner wall of the screw drill tool, the flange of the sealing plug is pressed on the head end port of the screw drill tool, and a liquid inlet is arranged on the circumference of the sealing plug; the center of the outer end face of the sealing plug is pressed with a screw rod, the middle section of the screw rod is screwed in a screw rod nut, the screw rod nut is fixed on a screw rod support, the outer end of the screw rod is connected with a hand wheel, and the lower end of the screw rod support is fixed on the test workbench.

10. The ground detection test device of the screw drill according to claim 9, wherein: the periphery of the boss at the center of the plug is embedded with a sealing plug O-shaped ring and the inner wall of the sealing ring is sealed, and a sealing ring O-shaped ring is embedded in a peripheral groove of the sealing ring and the inner wall of a unthreaded hole of the screw drilling tool is sealed.

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